Optical detection system integrating tonometer and automatic optometry unit

Abstract

The invention provides an optical detection system integrating an tonometer and an automatic optometry unit. The optical detection system comprises a first optical module and a second optical module. The first optical module comprises a light source, a first lens group, a second lens group, a reflector, a first spectroscope and a sensor. The first lens group and the reflector are arranged corresponding to the light source. The first spectroscope is arranged corresponding to the reflector, the second lens group and the sensor. The second optical module comprises a second spectroscope and first to third optical elements. Incident light emitted by the light source sequentially passes through the first lens group, is reflected by the reflector, passes through the first spectroscope, is reflected by the second spectroscope, passes through the first to third optical elements and then is emitted to eyes. Sensing light from eyes sequentially passes through the third optical element and the first optical element, is reflected by the second spectroscope, is reflected by the first spectroscope, passes through the second lens group and then is emitted to the sensor.

Description

Technical Field

[0001] The present invention relates to optical detection, and more particularly to an optical detection system integrating a tonometer and an autorefractor. Background Art

[0002] Please refer to Figure 1 and Figure 2 , Figure 1 and Figure 2 They are respectively a schematic diagram of measuring intraocular pressure of the eye through a traditional tonometer and a graph of pressure changes over time, wherein Ps is the pressure sensor in the system; PD is a monitor for monitoring the flatness (Applanation status) of the cornea (Cornea) of the eye EYE; 1D-PSD is a monitor for monitoring the position (Position) of the cornea of ​​the eye EYE; IOP is the measured intraocular pressure.

[0003] However, the traditional tonometer still cannot be integrated with the autorefractor and other optical devices into a multifunctional optical detection system, and further improvement is needed. Summary of the invention

[0004] In view of this, the present invention proposes an optical detection system integrating a tonometer and an automatic ophthalmometer to solve the above problems encountered in the prior art.

[0005] According to a specific embodiment of the present invention, an optical detection system integrating a tonometer and an automatic ophthalmometer is provided. In this embodiment, the optical detection system integrating a tonometer and an automatic ophthalmometer includes a first optical module and a second optical module. The first optical module includes a light source, a first lens group, a second lens group, a first reflector, a first spectroscope and a first sensor. The first lens group and the first reflector are arranged corresponding to the light source. The first spectroscope is arranged corresponding to the first reflector, the second lens group and the first sensor. The second optical module includes a second spectroscope, a first optical element, a second optical element and a third optical element arranged correspondingly. The incident light emitted by the light source passes through the first lens group, is reflected by the first reflector, passes through the first spectroscope, is reflected by the second spectroscope, passes through the first optical element, the second optical element and the third optical element, and then is emitted to the eye. The sensing light from the eye passes through the third optical element, the second optical element and the first optical element, is reflected by the second spectroscope, is reflected by the first spectroscope, passes through the second lens group, and then is emitted to the first sensor.

[0006] In one embodiment, the first optical module includes an autorefractor.

[0007] In one embodiment, the second optical module includes a tonometer.

[0008] In one embodiment, air enters between the first optical element and the second optical element of the second optical module.

[0009] In one embodiment, the first optical module further includes a pinhole, which is disposed between the first beam splitter and the second lens group. The sensing light reflected by the first beam splitter first passes through the pinhole and then passes through the second lens group.

[0010] In one embodiment, the second optical module further includes a third beam splitter, a filter, a third lens group and a second sensor. The third beam splitter is arranged relative to the second beam splitter, the second sensor is arranged on the other side away from the eye, and the filter and the third lens group are arranged in sequence between the third beam splitter and the second sensor.

[0011] In one embodiment, the image from outside the eye can be sequentially passed through the third optical element, the second optical element, the first optical element, the second beam splitter, the third beam splitter, the filter, and the third lens group and then projected to the second sensor to form a video path.

[0012] In one embodiment, the optical detection system further includes a third optical module for providing a Scheimpflug optical path. The third optical module includes a fourth lens group, a slit, a fifth lens group, a fourth beam splitter and a fifth beam splitter. The slit is disposed between the fourth lens group and the fifth lens group. The fifth beam splitter is disposed corresponding to the first beam splitter and the second beam splitter. The fourth beam splitter is disposed between the fifth beam splitter and the fifth lens group.

[0013] In one embodiment, the Scheimpflug light path passes through the fourth lens group, the slit, the fifth lens group, and the fourth beam splitter in sequence, and is then reflected by the fifth beam splitter into the second optical module, and is then reflected by the second beam splitter and passes through the first optical element, the second optical element, and the third optical element in sequence before being emitted to the eye.

[0014] In one embodiment, the optical detection system also includes a fourth optical module, which includes a second reflector, a sixth lens group and a fixed end. The second reflector is arranged corresponding to the fourth beam splitter, and the sixth lens group is arranged between the second reflector and the fixed end. The fixed end can be moved horizontally to approach or move away from the sixth lens group to generate an optical path difference from the fixed end through the sixth lens group and then reflected by the second reflector to the fourth beam splitter of the third optical module.

[0015] In one embodiment, the optical detection system also includes a fifth optical module, which includes a third reflector, a sixth beam splitter and a seventh lens group, the third reflector corresponds to the third beam splitter, the sixth beam splitter corresponds to the third reflector, and the seventh lens group corresponds to the sixth beam splitter.

[0016] In one embodiment, the XY axis aligned path passes through the seventh lens group and is sequentially reflected by the sixth beam splitter and the third reflector to the third beam splitter of the second optical module.

[0017] In one embodiment, the K1 / K2 path passes through the sixth beam splitter and is reflected by the third reflector to the third beam splitter of the second optical module.

[0018] Compared with the prior art, the optical detection system proposed in the present invention can integrate a tonometer and an autorefractor into the same system through the design of multiple optical modules, and can also provide optical paths such as a video path, a Scheimpflug optical path, and an XY axis alignment path to realize an integrated multifunctional optical detection system.

[0019] The advantages and spirit of the present invention may be further understood through the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 and Figure 2 They are respectively a schematic diagram of measuring intraocular pressure of the eye using a traditional tonometer and a graph of pressure changes over time.

[0021] Figure 3 FIG. 4 is a schematic diagram of an optical detection system integrating a tonometer and an auto-refractometer in a specific embodiment of the present invention.

[0022] Description of main component symbols:

[0023] 3…Optical inspection system

[0024] 31…First optical module

[0025] 32…Second optical module

[0026] 33…Third optical module

[0027] 34…Fourth optical module

[0028] 35…Fifth optical module

[0029] LS…Light Source

[0030] N1…First lens group

[0031] N2…The second lens group

[0032] M1…First reflector

[0033] BS1…First beam splitter

[0034] PH…pinhole

[0035] SH…First Sensor

[0036] BS2…Second beam splitter

[0037] BS3…The third beam splitter

[0038] OE1…First Optical Element

[0039] OE2…Second optical element

[0040] OE3…Third optical element

[0041] FT...Filter

[0042] N3…The third lens group

[0043] SR…Second sensor

[0044] N4…The fourth lens group

[0045] SL…Slit

[0046] N5…The fifth lens group

[0047] BS4…4th beam splitter

[0048] BS5…Fifth beam splitter

[0049] M2…Second reflector

[0050] N6…The sixth lens group

[0051] FX…Fixed terminal

[0052] M3…Third reflector

[0053] BS6…Sixth beam splitter

[0054] N7…The seventh lens group

[0055] XY…XY axis aligned path

[0056] K1 / K2…K1 / K2 path

[0057] AIR…Air

[0058] SIP…Scheimpflug optical path

[0059] L…Incident light

[0060] S…Sensing light

[0061] EYE…Eyes

[0062] Ps…pressure sensor in the system

[0063] PD…Monitor

[0064] 1D-PSD…Monitor

[0065] IOP…measured intraocular pressure

[0066] IM…Image outside the eye DETAILED DESCRIPTION

[0067] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Elements / components using the same or similar reference numerals in the drawings and embodiments are intended to represent the same or similar parts.

[0068] According to a specific embodiment of the present invention, an optical detection system integrating a tonometer and an auto-optometer can be provided. The tonometer and the auto-optometer can be integrated into the same system through the design of multiple optical modules. The optical detection system can be implemented in the form of a single optical detection device or a combination of multiple optical detection devices without any specific limitation.

[0069] In this embodiment, the optical detection system 3 integrating a tonometer and an autorefractor includes a first optical module 31, a second optical module 32, a third optical module 33, a fourth optical module 34 and a fifth optical module 35. The first optical module 31 includes an autorefractor and the second optical module 32 includes a tonometer.

[0070] The first optical module 31 includes a light source LS, a first lens group N1, a second lens group N2, a first reflector M1, a first beam splitter BS1, a pinhole PH, and a first sensor SH. The first lens group N1 and the first reflector M1 are arranged corresponding to the light source LS. The first beam splitter BS1 is arranged corresponding to the first reflector M1, the pinhole PH, the second lens group N2, and the first sensor SH. In practical applications, the light source LS may be a laser light source, the first lens group N1 may include a single biconvex lens, and the second lens group N2 may include two biconvex lenses and a microlens array, but is not limited thereto.

[0071] The second optical module 32 includes a second beam splitter BS2, a third beam splitter BS3, a first optical element OE1, a second optical element OE2, a third optical element OE3, a filter FT, a third lens group N3 and a second sensor SR. The second beam splitter BS2, the first optical element OE1, the second optical element OE2 and the third optical element OE3 are arranged in sequence corresponding to each other. The third optical element OE3 is arranged on the side close to the eye EYE. Air AIR will enter between the first optical element OE1 and the second optical element OE2. The third beam splitter BS3 is arranged relative to the second beam splitter BS2. The second sensor SR is arranged on the other side away from the eye EYE. The filter FT and the third lens group N3 are arranged in sequence between the third beam splitter BS3 and the second sensor SR.

[0072] In practical applications, the first optical element OE1 may include a focusing lens to focus light onto the second optical element OE2; the filter FT is used to filter light to filter out light of a specific wavelength; the third lens group N3 may include a combination of multiple lenses of different types, such as a convex-planar lens, a biconcave lens, a biconvex lens, and a combination of a convex-concave lens, but is not limited thereto.

[0073] When the light source LS of the first optical module 31 emits incident light L, the incident light L sequentially passes through the first lens group N1, is reflected by the first reflector M1, passes through the first beam splitter BS1, and then exits the first optical module 31. Then, after the incident light L enters the second optical module 32, the incident light L sequentially reflects by the second beam splitter BS2, passes through the first optical element OE1, the second optical element OE2, and the third optical element OE3, and then is emitted to the eye EYE. If the optical path from the light source LS to the eye EYE is defined as the first optical path, the incident light L emitted by the light source LS is emitted to the eye EYE along the first optical path.

[0074] When the incident light L hits the eye EYE, the eye EYE will reflect the incident light L to form a sensing light S that is incident on the second optical module 32. The sensing light S can pass through the third optical element OE3, the second optical element OE2, and the first optical element OE1 in the second optical module 32 in sequence, and is reflected by the second beam splitter BS2 to exit the second optical module 32. Then, when the sensing light S hits the first optical module 31, it will be reflected by the first beam splitter BS1, pass through the pinhole PH, and the second lens group N2, and then be incident on the first sensor SH.

[0075] In addition, the image IM from the outside of the eye EYE (such as the iris) can be sequentially passed through the third optical element OE3, the second optical element OE2, the first optical element OE1, the second beam splitter BS2, the third beam splitter BS3, the filter FT, and the third lens group N3 in the second optical module 32 and then projected to the second sensor SR to form a video path.

[0076] The third optical module 33 includes a fourth lens group N4, a slit SL, a fifth lens group N5, a fourth beam splitter BS4 and a fifth beam splitter BS5. The slit SL is disposed between the fourth lens group N4 and the fifth lens group N5. The fifth beam splitter BS5 is disposed corresponding to the first beam splitter BS1 and the second beam splitter BS2. The fourth beam splitter BS4 is disposed between the fifth beam splitter BS5 and the fifth lens group N5. In practical applications, the fourth lens group N4 may include a single biconvex lens, and the fifth lens group N5 may include a single biconvex lens, but is not limited thereto.

[0077] The third optical module 33 is used to provide a Scheimpflug optical path SIP. The Scheimpflug optical path SIP sequentially passes through the fourth lens group N4, the slit SL, the fifth lens group N5, and the fourth beam splitter BS4, and is then reflected by the fifth beam splitter BS5 into the second optical module 32, and is then reflected by the second beam splitter BS2, and then sequentially passes through the first optical element OE1, the second optical element OE2, and the third optical element OE3, and is emitted to the eye EYE.

[0078] The fourth optical module 34 includes a second reflector M2, a sixth lens group N6 and a fixed end FX. The second reflector M2 is arranged corresponding to the fourth beam splitter BS4. The sixth lens group N6 is arranged between the second reflector M2 and the fixed end FX. The fixed end FX can be moved horizontally to approach or move away from the sixth lens group N6 to generate an optical path difference from the fixed end FX through the sixth lens group N6 and then reflected by the second reflector M2 to the fourth beam splitter BS4 of the third optical module 33. In practical applications, the sixth lens group N6 may include two biconvex lenses, but is not limited thereto.

[0079] The fifth optical module 35 includes a third reflector M3, a sixth beam splitter BS6 and a seventh lens group N7. The third reflector M3 is arranged corresponding to the third beam splitter BS3. The sixth beam splitter BS6 is arranged corresponding to the third reflector M3. The seventh lens group N7 is arranged corresponding to the sixth beam splitter BS6. In practical applications, the seventh lens group N7 may include two biconvex lenses, but is not limited thereto.

[0080] The XY axis alignment path XY passes through the seventh lens group N7 and is reflected by the sixth beam splitter BS6 and the third reflector M3 to the third beam splitter BS3 of the second optical module 32. The K1 / K2 path K1 / K2 passes through the sixth beam splitter BS6 and is reflected by the third reflector M3 to the third beam splitter BS3 of the second optical module 32.

[0081] Compared with the prior art, the optical detection system proposed in the present invention can integrate a tonometer and an autorefractor into the same system through the design of multiple optical modules, and can also provide optical paths such as a video path, a Scheimpflug optical path, and an XY axis alignment path to realize an integrated multifunctional optical detection system.

[0082] The above embodiments are only used to facilitate the explanation of the present invention and are not intended to limit the present invention. Without departing from the spirit of the present invention, various simple deformations and modifications made by those skilled in the art according to the scope of the patent application and the invention description of the present invention should still be included in the scope of protection required by the patent application documents.

Claims

1. An optical detection system integrating a tonometer and an automatic ophthalmometer, characterized in that: include: A first optical module comprises a light source, a first lens group, a second lens group, a first reflector, a first beam splitter and a first sensor, wherein the first lens group and the first reflector are arranged corresponding to the light source, the first beam splitter is arranged corresponding to the first reflector, the second lens group and the first sensor, and the light source emits incident light; as well as The second optical module includes a second beam splitter, a first optical element, a second optical element and a third optical element which are arranged correspondingly; The incident light emitted by the light source sequentially passes through the first lens group, is reflected by the first reflector, passes through the first beam splitter, is reflected by the second beam splitter, passes through the first optical element, the second optical element and the third optical element, and then is emitted to the eye; The sensing light from the eye passes through the third optical element, the second optical element and the first optical element in sequence, is reflected by the second beam splitter, is reflected by the first beam splitter, passes through the second lens group and then is emitted to the first sensor.

2. The optical detection system integrating tonometer and auto-optometer as claimed in claim 1, characterized in that: The first optical module includes an auto-optometer.

3. The optical detection system integrating tonometer and auto-optometer as claimed in claim 1, characterized in that: The second optical module includes a tonometer.

4. The optical detection system integrating tonometer and auto-optometer as claimed in claim 1, characterized in that: Air may enter between the first optical element and the second optical element of the second optical module.

5. The optical detection system integrating tonometer and auto-refractometer as claimed in claim 1, wherein: The first optical module further includes a pinhole, which is disposed between the first beam splitter and the second lens group. The sensing light reflected by the first beam splitter first passes through the pinhole and then passes through the second lens group.

6. The optical detection system integrating tonometer and auto-optometer as claimed in claim 1, characterized in that: The second optical module also includes a third beam splitter, a filter, a third lens group and a second sensor. The third beam splitter is arranged relative to the second beam splitter. The second sensor is arranged on the other side away from the eye. The filter and the third lens group are arranged in sequence between the third beam splitter and the second sensor.

7. The optical detection system integrating tonometer and auto-optometer as claimed in claim 6, characterized in that: The image from outside the eye can be sequentially passed through the third optical element, the second optical element, the first optical element, the second beam splitter, the third beam splitter, the filter, and the third lens group and then projected to the second sensor to form a video path.

8. The optical detection system integrating tonometer and auto-optometer as claimed in claim 1, characterized in that: Also includes: The third optical module is used to provide a Scheimpflug optical path. The third optical module includes a fourth lens group, a slit, a fifth lens group, a fourth beam splitter and a fifth beam splitter. The slit is arranged between the fourth lens group and the fifth lens group. The fifth beam splitter is arranged corresponding to the first beam splitter and the second beam splitter. The fourth beam splitter is arranged between the fifth beam splitter and the fifth lens group.

9. The optical detection system integrating tonometer and auto-optometer as claimed in claim 8, characterized in that: The Scheimpflug optical path sequentially passes through the fourth lens group, the slit, the fifth lens group, and the fourth beam splitter, and is then reflected by the fifth beam splitter into the second optical module, and is then reflected by the second beam splitter, and sequentially passes through the first optical element, the second optical element, and the third optical element, and is emitted to the eye.

10. The optical detection system integrating tonometer and auto-optometer as claimed in claim 8, characterized in that: Also includes: The fourth optical module includes a second reflector, a sixth lens group and a fixed end, wherein the second reflector is arranged corresponding to the fourth beam splitter, the sixth lens group is arranged between the second reflector and the fixed end, and the fixed end can be horizontally moved to approach or move away from the sixth lens group to generate an optical path difference of the fourth beam splitter of the third optical module after passing through the sixth lens group from the fixed end and being reflected by the second reflector.

11. The optical detection system integrating tonometer and auto-optometer as claimed in claim 6, characterized in that: Also includes: The fifth optical module includes a third reflector, a sixth beam splitter and a seventh lens group. The third reflector is arranged corresponding to the third beam splitter, the sixth beam splitter is arranged corresponding to the third reflector, and the seventh lens group is arranged corresponding to the sixth beam splitter.

12. The optical detection system integrating tonometer and auto-optometer as claimed in claim 11, characterized in that: The XY axis alignment path passes through the seventh lens group and is sequentially reflected by the sixth beam splitter and the third reflector to the third beam splitter of the second optical module.

13. The optical detection system integrating tonometer and auto-optometer as claimed in claim 11, characterized in that: The K1 / K2 path passes through the sixth beam splitter and is reflected by the third reflector to the third beam splitter of the second optical module.

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